Midterm Review #2

Front

What is a density dependent limiting factor?

Back

A factor that affects a population's growth in relation to its density, such as competition for resources.

Front

What happens when a population reaches its carrying capacity?

Back

Population growth stops as the number of individuals stabilizes due to limited resources.

Front

Define parasitism.

Back

A relationship between two species where one (the parasite) benefits at the expense of the other (the host).

Front

What is competition in ecology?

Back

The struggle between organisms for the same resources in an ecosystem.

Front

Where do animals primarily obtain nitrogen?

Back

From plants, which absorb nitrogen from the soil.

Front

What is the role of competition in population dynamics?

Back

It can slow down population growth as individuals compete for limited resources.

Front

Give an example of a density dependent factor.

Back

Competition for food, water, or space.

Front

What is the difference between predation and competition?

Back

Predation involves one species hunting another for food, while competition involves species vying for the same resources.

Front

What is symbiosis?

Back

A close relationship between two species, which can be beneficial, neutral, or harmful.

Front

How do natural disasters affect population growth?

Back

They are density independent factors that can drastically reduce population sizes regardless of density.